Ami
starting to spend too much on rocks
Member since September 2016
Posts: 162
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Post by Ami on Aug 28, 2018 16:40:21 GMT -5
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Post by rockjunquie on Aug 28, 2018 16:54:16 GMT -5
Those are some nice bushes! What is the host rock? Look like sandstone.
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Ami
starting to spend too much on rocks
Member since September 2016
Posts: 162
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Post by Ami on Aug 28, 2018 17:01:58 GMT -5
Those are some nice bushes! What is the host rock? Look like sandstone. Thank you, I love it! And yes, it is sandstone.
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Post by fernwood on Aug 28, 2018 18:54:52 GMT -5
What a wonderful find. What are you going to do with it?
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Ami
starting to spend too much on rocks
Member since September 2016
Posts: 162
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Post by Ami on Aug 28, 2018 19:34:55 GMT -5
What a wonderful find. What are you going to do with it? Well, honest? I don't know. I'm not an fossil collector. I just thought it is a gorgeous specimen.
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Post by fantastic5 on Aug 28, 2018 19:52:30 GMT -5
That is really beautiful, great score!
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Post by fernwood on Aug 29, 2018 8:04:28 GMT -5
If the host is sandstone, then would be tough to polish or cab, except for the very experienced. I would apply a sealer of some type and frame. Sealer could be oil or a clear coat spray. Would be great decoration. Have never seen such an excellent display specimen before.
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Ami
starting to spend too much on rocks
Member since September 2016
Posts: 162
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Post by Ami on Aug 29, 2018 9:36:31 GMT -5
If the host is sandstone, then would be tough to polish or cab, except for the very experienced. I would apply a sealer of some type and frame. Sealer could be oil or a clear coat spray. Would be great decoration. Have never seen such an excellent display specimen before. I was thinking to make an display case, but I never thought to apply a coat. Hmmm, I have to research that. Your advice is oil, what kind?
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Post by fernwood on Aug 29, 2018 10:37:31 GMT -5
I have used grape seed oil on stones before. It does not attract mold. Another option is linseed oil, which is used on furniture. Am sure others would have additional options.
I have also used Krylon brand, Triple Thick, Clear Glaze on some pieces. It dries fast. Long lasting finish, that does not yellow with age. All depends on whether you want the piece to be easily used for lapidary in the future. If so, then the oil would be best.
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Ami
starting to spend too much on rocks
Member since September 2016
Posts: 162
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Post by Ami on Aug 29, 2018 11:24:49 GMT -5
I have used grape seed oil on stones before. It does not attract mold. Another option is linseed oil, which is used on furniture. Am sure others would have additional options. I have also used Krylon brand, Triple Thick, Clear Glaze on some pieces. It dries fast. Long lasting finish, that does not yellow with age. All depends on whether you want the piece to be easily used for lapidary in the future. If so, then the oil would be best. Thank you, fernwood ! I will try oil, and I hope I will become experienced enough in future to try to polish it.
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Deleted
Deleted Member
Member since January 1970
Posts: 0
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Post by Deleted on Aug 29, 2018 13:07:55 GMT -5
I will try oil, and I hope I will become experienced enough in future to try to polish it. This material does not take to being sanded or polished. It is split from layered deposits, with the dendrites growing between layers. Attempting to polish will just knock off the dendrites. You do see the dendritic sandstone and limestone cut as gems, but almost always just cut to an outline shape (not domed or polished) and sealed. As fernwood hinted, oil will yellow rather quickly. That may or may not be a problem, depending on whether you care to preserve the original look. You'd only want to apply a very thin coat, in any event, as you likely do not want to soak porous material such as this (which will make removing it later next to impossible). The term "non-yellowing" is marketing hype - man-made resins and coatings all yellow/darken/degrade with age and UV exposure. The term merely means that some sort of UV inhibitor is included to slow down the process. A removeable spray-on finish might be the better route, or a removeable masonry sealer from your local home improvement store. Rather than producing a glossy finish, the object of these would be to even-out the color and minimize surface scratches. I would recommend using a light coating of something removeable so that the degraded/yellowed/darkened coating can be taken off in the future and the piece recoated.
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Post by greig on Aug 30, 2018 13:31:25 GMT -5
I have used automotive Armor-All on harder rocks. I wipe it on and then wipe off the excess before it dries. I have never tried it on sandstone and suspect it would soak in.
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quartz
Cave Dweller
breakin' rocks in the hot sun
Member since February 2010
Posts: 3,332
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Post by quartz on Aug 30, 2018 13:49:33 GMT -5
We have a very nice piece that's loaded w/dendrites. I made a frame for it [like a picture frame], cut the glass to fit, then took it to a frame shop and had it matted so as to fill in all around. It came out really nice. The guy at the frame shop said it was the first rock he had ever matted.
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Tommy
Administrator
Member since January 2013
Posts: 12,592
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Post by Tommy on Aug 30, 2018 13:51:05 GMT -5
That's fantastic! I've never seen that color combination sandstone with dendrites. Congratulations
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Post by taylor on Aug 30, 2018 20:52:43 GMT -5
Nice piece Ami ! I have something similar, also from an estate. Any suggestions where this material is from?
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Ami
starting to spend too much on rocks
Member since September 2016
Posts: 162
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Post by Ami on Aug 31, 2018 7:53:39 GMT -5
That's fantastic! I've never seen that color combination sandstone with dendrites. Congratulations Thank you! Was a lucky find!
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Ami
starting to spend too much on rocks
Member since September 2016
Posts: 162
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Post by Ami on Aug 31, 2018 7:56:44 GMT -5
Nice piece Ami ! I have something similar, also from an estate. Any suggestions where this material is from? I have no idea. I wish I have known
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Ami
starting to spend too much on rocks
Member since September 2016
Posts: 162
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Post by Ami on Aug 31, 2018 7:59:59 GMT -5
We have a very nice piece that's loaded w/dendrites. I made a frame for it [like a picture frame], cut the glass to fit, then took it to a frame shop and had it matted so as to fill in all around. It came out really nice. The guy at the frame shop said it was the first rock he had ever matted. I will probably frame it too, but I want to preserve it first.
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Post by pauls on Sept 1, 2018 17:20:47 GMT -5
Nice specimen Ami.
You do realise that Dendrites aren't fossils, they are crystals of Manganese that have grown in cracks or spaces in the rock, so really a mineral specimen. Be careful what you do to preserve it, applying a coat of something is likely to darken the host rock and spoil the look of the pattern. Dendrites are usually fairly hard and durable and usually don't really need any protection unless exposed to the weather or lots of grubby fingers.
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Fossilman
Cave Dweller
Member since January 2009
Posts: 20,666
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Post by Fossilman on Sept 2, 2018 8:37:47 GMT -5
Either way,its a nice score!...
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